**Product Specifications:**
**Brand:** Sennheiser
**Features:**
- Innovative hybrid adaptive noise cancellation for personalized sound experience
- Continuous monitoring of environmental noise for automatic optimization of noise cancellation levels
- 2 external adaptive noise-cancelling microphones, 2 internal adaptive noise-cancelling microphones (invisible)
- Bluetooth 5.2 technology for lower latency and higher transmission stability
- Silicone headband padding, fabric headband, freely rotating hinges
- Custom leather ear pads, smooth headphone exterior contours
**In the Box:**
- MOMENTUM4 Wireless Headphones
- Headphone case
- Audio cable
- USB-C charging cable
- Airplane adapter
- Quick start guide
- Safety guide
**Wearing Style:** Over-ear stereo headphones
**Connectivity:** Bluetooth 5.2 compatible
**Transducer Principle:** Dynamic driver
**Transmission Frequency/Modulation:** 2,402MHz to 2,480MHz, GFSK, π/4DQPSK/8DPSK
**Supported Codecs:** SBC, AAC, aptX, aptX AdaptiveTM
**Supported Profiles:** A2DP, AVRCP, HFP
**Microphone Frequency Response:** 50Hz-10kHz
**Speaker Frequency Response:** 6Hz-22kHz
**Speaker Sensitivity:** 106dBSPL (1kHz/0dBFS)
**Total Harmonic Distortion of Speaker:** <0.3% (1kHz/100dBSPL)
**Microphone Pickup Pattern:** 2x2 microphone array, digital noise cancellation
**Battery Life:** Up to 60 hours of headphone playback with ANC on and Bluetooth connected
**Additional Information:**
- Laboratory data
- MOMENTUM4 Wireless Headphones
- MOMENTUM3 Wireless Headphones
- Sound calibration, active noise cancellation, adaptive noise cancellation
- 3 selectable noise cancellation modes, transparent hearing, adjustable intensity
- Freely rotating hinges, battery life of 60 hours, 17 hours
- Call and voice assistant activation (2x2 microphones), (2 microphones)
- Touch control, adjustable sidetone, automatic wind noise suppression
- Bluetooth version 5.2, 5.0, SBC, AAC, aptX, aptX Low Latency
**Bluetooth Codec Support:** SBC, AAC, aptX, aptX AdaptiveTM
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